Energy efficient algorithms for Electric Vehicle charging with intermittent renewable energy sources

Chenrui Jin, Xiang Sheng, Prasanta Ghosh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

29 Scopus citations

Abstract

Renewable energy and Electric Vehicles (EV) show potential to be promising solutions for energy cost saving and emission reduction. However, the integration of renewable energy generation into the electric grid can be difficult, because of the source intermittency and inconsistency with energy usage. In this paper, we study the problem of allocating energy from renewable sources to EVs in an energy efficient manner. We assume that the renewable energy supply is time variant and possibly unpredictable. EVs' charging requests should be satisfied within a specified time frame, which may incur a cost of drawing extra energy (possibly non-renewable energy) if the renewable energy supply is not sufficent to meet the deadlines and may also reduce energy efficiency. We formulate a stochastic optimization problem based on queueing model to minimize the time average cost of using other energy sources (and hence make most usage of the renewable energy source). The proposed approach fully considers the individual charging rate limit and deadline of each EV. The Lyapunov optimization technique is used to solve the problem. The developed dynamic control algorithm does not require knowledge of the statistics of the time-varying renewable energy generation, EV charging demand process, or extra energy pricing.

Original languageEnglish (US)
Title of host publication2013 IEEE Power and Energy Society General Meeting, PES 2013
DOIs
StatePublished - Dec 1 2013
Event2013 IEEE Power and Energy Society General Meeting, PES 2013 - Vancouver, BC, Canada
Duration: Jul 21 2013Jul 25 2013

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Other

Other2013 IEEE Power and Energy Society General Meeting, PES 2013
CountryCanada
CityVancouver, BC
Period7/21/137/25/13

Keywords

  • Lyapunov optimization
  • electric vehicle
  • energy efficiency
  • renewable energy

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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